forked from Minki/linux
0c4e85813d
Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
|
|
* NET3: 802.3 data link hooks used for IPX 802.3
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* 802.3 isn't really a protocol data link layer. Some old IPX stuff
|
|
* uses it however. Note that there is only one 802.3 protocol layer
|
|
* in the system. We don't currently support different protocols
|
|
* running raw 802.3 on different devices. Thankfully nobody else
|
|
* has done anything like the old IPX.
|
|
*/
|
|
|
|
#include <linux/in.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <net/datalink.h>
|
|
#include <net/p8022.h>
|
|
|
|
/*
|
|
* Place an 802.3 header on a packet. The driver will do the mac
|
|
* addresses, we just need to give it the buffer length.
|
|
*/
|
|
static int p8023_request(struct datalink_proto *dl,
|
|
struct sk_buff *skb, unsigned char *dest_node)
|
|
{
|
|
struct net_device *dev = skb->dev;
|
|
|
|
dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
|
|
return dev_queue_xmit(skb);
|
|
}
|
|
|
|
/*
|
|
* Create an 802.3 client. Note there can be only one 802.3 client
|
|
*/
|
|
struct datalink_proto *make_8023_client(void)
|
|
{
|
|
struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
|
|
|
|
if (proto) {
|
|
proto->header_length = 0;
|
|
proto->request = p8023_request;
|
|
}
|
|
return proto;
|
|
}
|
|
|
|
/*
|
|
* Destroy the 802.3 client.
|
|
*/
|
|
void destroy_8023_client(struct datalink_proto *dl)
|
|
{
|
|
kfree(dl);
|
|
}
|
|
|
|
EXPORT_SYMBOL(destroy_8023_client);
|
|
EXPORT_SYMBOL(make_8023_client);
|
|
|
|
MODULE_LICENSE("GPL");
|